56611326864 has 40 divisors (see below), whose sum is σ = 146255144032. Its totient is φ = 18869253120.

The previous prime is 56611326791. The next prime is 56611326881. The reversal of 56611326864 is 46862311665.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1076544 + ... + 1127904.

Almost surely, 2^56611326864 is an apocalyptic number.

It is an amenable number.

56611326864 is an abundant number, since it is smaller than the sum of its proper divisors (89643817168).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56611326864 is a wasteful number, since it uses less digits than its factorization.

56611326864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74335 (or 74329 counting only the distinct ones).

The product of its digits is 1244160, while the sum is 48.

The spelling of 56611326864 in words is "fifty-six billion, six hundred eleven million, three hundred twenty-six thousand, eight hundred sixty-four".